Fuel control valve construction

Details Fuel control valve construction Fuel control valve construction

1990-11-26

1992-06-16

Michalsky, Gerald A.

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

251 31, 251 613, 251 615, F16K 31128

Patent

active

051218992

ABSTRACT:
A fuel control valve construction having a flexible diaphragm defining two chambers that are disposed on opposite sides of the diaphragm that carries a main valve member that is urged in a direction to close a main valve seat by a spring, and a control unit interconnected to an inlet and an outlet and to the chambers and being adapted to interconnect the inlet to one of the two chambers and the outlet to the other of the two chambers to move the diaphragm to a first position that causes the main valve member to close the main valve seat whereby inlet pressure in the one chamber will generate an additional seating force on the main valve member to ensure a tight closure of the main valve seat and adapted to interconnect the inlet to the other of the two chambers and the outlet to the one of the two chambers to move the diaphragm to a second position that causes the main valve member to open the main valve seat.

REFERENCES:
patent: 3528452 (1970-09-01), Willson
patent: 4269028 (1991-05-01), Hattori

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